She was warned the Nazis could turn up, on listening to the audio, part of the issue was the party expected she would talk to them to formulate a comms strategy should that happen (e.g. risk mitigation) and she didn't. Despite having had coaching that that was what she was expected to do after the previous 2 incidents.
Again, not unreasonable on the party's behalf I don't think.
Turn it around. What do you think the party should have done? Ignored the fact she completely went against their advice, hadn't learnt from previous events and expose them to reputational damage as a result? It sounds like they felt it was catastrophic to some strategy they had ("Redleg", whatever that is).
The fact is at some point the rubber meets the road, one's colleagues aren't always one's friends and they could put the organisation above the individual. That's just how life works.